Anson groves ronan



No. 753,003 PATENTED FEB. 23, 1904.

A. G. RONAN.

GAS ENGINE.

APPLIGATION FILED JAN. 24, 1903.

N0 MODEL. 2 SHEETS-SHEET 1.

JC IB PATENTED FEB. 23, 1904.

A. G. RUNAN.

GAS ENGINE.

APPLIGATION FILED JAN. 24, 1903.

N0 MODEL.

351 I 0/ I I I a I II 1 I II I I I I I II I I I I I I I I I I Wk I r .14E k .1 I I --.I I-I I. I

Witnesses.

TNK div-s warms no Fuorou mrmsamnmx n. b.

' 1'0 alliwhom it may concern.-

. UNITED STATES Patented February 23, 1904.

PATENT OFFICE,

' ANSON GROVES RONAN; OF TORONTO, CANADA.

GAS-ENGINE.

SPECIFICATION forming part of Letters Patent No. 753,003, dated February23, 1904. Application filed Jannary24, 1903. Serial No. 140,378. (Nomodel.)

Be it known that I, Anson Gnovns Rowan,

a subject of the King ofGreat Britain, residing in the city of Toronto,in the county of York and Province of Ontario, Canada, have inventedcertain new and useful Improveare, first, to remove as much as possibleof g the waste products of combustion from the explosion-chamber, sothat the succeeding charges'of the explosive mixture will be as free aspossible of the spent gases, thus pro- ,ducing' a powerful engine andone that can be easily and quickly started, and, secondly, to reduce thenumber of valves used in gas-engines; and it consists,,essentially, of asuitable explosion-chamber provided with a'valve controlling a porttherefrom tothe atmosphere and a separate opening for raw liquid fuel,means combined with said explosion-chamber for operating said valve sothat same will perform one function of permitting the escape j of wasteproducts of combustion from the explosion-chamber ,and a furtherfunction of admitting pure airthereinto, and the further combination ofelements, as hereinafter more particularly explained. I preferably makeuse of the piston-head to operateduring its suction-stroke or portionthereof the measuring means containing the raw liquid fuel; bu tI layclaim tonsing any means for feeding saidvfuel to the engine.

Figure 1 is a vertical central section through the preferred form ofexplosion-chamber constructed after my invention, showing same attachedto a suitable engine-casing provided with suitable power-transmittingparts. Fig.

2 is an enlarged detail view of the mechanism for operat ng the valve.Fig, 3 ma side view -of a portion of the explosion-chamber, showofexplosion-chamber.

ing the form of main exhaust-port usedin the preferred form of cylinder.Fig, 4 is a vertical central section through an alternative form Fig. 5is a verticalcentral-section through. another alternative I formofexplosion-chamber. This figure also I chamber.

shows a longitudinal section through the measuring device used and tankfor same.

Fig; 6 is an enlarged detail view of the mechanism for operating thevalve in the explosion-chainber shown in Fig. 5. v

In the drawing, like characters of reference indicate correspondingparts in each figure.

.1 preferably usean explosion chamber the walls of which are constructedso as to be aircooled; but it must be distinctly understood t' ,liat;Ido not confine myself to any particular construction ofexplosion-chamber for cooling purposes. It will :be understood from thisthat I may use a wat'er-jacket, if desired; but

' I preferably use an explosion-chamber A, constructed of asingle wallor shell, so'that same may be air-cooled. I B is the upper portion ofthe engine-casing, to which the explosion-chamber is suitably secured,and O the lower portion of same.

' D is the engine-shaft, the inner ends of which are keyed tothefly-wheels E, which by means .of the pin "F are secured'to thepiston-rod G, provided with the'usual pistonhead H. Preferably in thehead of the explosion-chamber I construct an opening I and operatetherein in order to open and close said opening a suitable valve J,preferably springcontrolled. This valve is mechanically operated by anysuitable means, such as a lever (and other parts hereinafter described,)-.pivoted atk to a suitable plate L, which is suitably secured to thehead of the explosionv Keyed to the shaft D is a' spurgear M, whichmeshes with the spurwheel N, journaled onthe rod O, which has bearing inthe" plate P, secured to one side of the engine-casing and the boss Q,which forms part of the engine-casing, as shown. The spurwheel N ispreferably provided with a sleeve R, which incloses the boss Qa'nd hasbearing thereon. I

S is a rod held in any suitable bearings, against the upper end of whichrests the lever K, In the lower end of the rod S issuitably pivoted aroller T, which operates upon the sleeve R and its cams, as hereinafterdescribed.

U is an igniter, preferably an electric one, and V the delivery end of.the conduit V of the fuel-measuring device, which enters saidexplosion-chamber through opening W.

The fuel-measuring device I use in connection with my engine is fullydescribed in my application, Serial No. 116,559, filed July 22, 1902.

Formed in one side of the preferred form of explosion-chamber A is asuitable main exhaust-port X, which is designed to be fully opened whenthe piston-head H is-at the limit of its outward movement. As will beseen, the main exhaust-port comprises anumber of holes a, which'leadfrom the explosion-chamber. I may, if desired, construct the mainexhaust-port in several ways Without departing from the spirit of myinvention; but in order to prevent the packing-rings h, with which theusual piston-head is provided, from being obstructed in their movement Ipreferably provide the series of holes a, before described. The shaft Dand its connecting parts are of course operated by hand in starting upthe engine. I will suppose that an explosion has already taken place andforced the pistonhead H down into the position shown in Fig. 1. As thepiston-head opens the main exhaustport X, waste products of combustionexhaust through the several holes a of same, and by the time thepiston-head moves upward and closes said main exhaust-port the majorportion of the Waste, products of combustion have passed from theexplosion-chamber. Simultaneously the piston-head H closes the mainexhaust-port X the valve J is opened by reason of the cam 2, secured toor forming part of the sleeve R, abutting the roller T, thus/moving therod S upward in the direction indicated by ar. row and depressing theend I) of the lever K- The valve is kept open while the piston-head Hmoves to thelimit 3 of its inward stroke, thus discharging a secondvolume of the waste products of combustion through the valve. The saidvalve still remains open during the movement of the piston-head H fromline 3 to approximately line 4, thus permitting a charge of pure air torush into the explosion-chamber on top of the residue of the wasteproducts of combustion therein, thus keeping same next the piston-head.Immediately the cam 2 es-- capes the roller T the said roller drops ontothe uniform periphery of the sleeve R and rests in contact with same forthe space 5 shown between the cam 2 and the other cam, thus permittingthe said valve to be closed by its spring 1. The length of the space 5is approximately indicated by the distance between the lines 4 and 6.During the length of this space the required charge of raw liquid fuelis discharged through the delivey end of the conduit of thefuel-measuring device into the explosionchamber into the body of pureair above the residue of the waste products of combustion. Immediatelythe cam 7 secured to or forming part of the sleeve R, abuts the roller Tthe rod S is moved upward, depressing the lever K, so that the valve Jis opened, and as the piston-head continues in its outward movement avolume of fresh air simultaneously rushes into the explosion-chamber.the piston-head again opens the main exhaustport X and until it closessame on its return movement the residue of the waste products ofcombustion are removed from the explosion chamber. Simultaneously thepistonhead H closes the main exhaust-port X the roller T escapes the cam7 and rests again upon the periphery of the sleeve R for the space 8between the cams 2 and 7, thus closing the Valve. During the continuedmovement of the piston-head the explosive mixture is compressed,ignited, and exploded, and the piston-head H forced down into theposition shown in Fig. 1, when the above-described cycle takes placeagain. By opening the valve J by the cam 7 thus permitting pure air torush into the explosion-chamber from the atmosphere, it will be seenthatI am assured of the proper proportion of air to be mixed with theraw gasolene in order to provide an explosive mixture.

From this specification it will be distinctly understood that in mypreferred form of in- From the time vention I actually keep the valve Jopen and the main exhaust-port X open, while I have within theexplosion-chamber a charge of raw gasolene. The piston-head H is ofcourse timed to'close the main exhaust-port X before any of the gasoleneescapes from the explosion= chamber therethrough.

On reference to Fig. 4: it will be seen that I provide theexplosion-chamber with two main exhaust-ports X and X for the purpose ofenabling me to exhaust the waste products of combustion from theexplosion-chamber as quickly as possible. The best practice ingasolene-engine construction is to get rid of the waste products ofcombustion as soon as possible in order to keep the explosion-chamber atthe minimum temperature.

. By dispensing with the usual valve-chamber and inserting the igniterinto the explosion-chamber directly above the piston-head therein itwill be understood that the ignition and explosion of the explosivemixture takes place wholly within the explosion-chamber, thus increasingthe efliciency of the engine. By reducing the number of valves used anddoing away with the ordinary valve-chamber I reduce the weight andexpense of gas-engines. r

In the alternative form of explosion-chamber shown in Fig. 5 I dispensewith an ex-.

piston-head reaches the limit of its outward stroke the cam 9, securedto or forming part 25 fuel-measuring device.

5 voir V to the fuel-measurer.

' of the sleeve R, abuts theroller T, suitablyjournaled in the lower endof the rods", and raises said rod upward in the direction indicated byarrow, thus depressing the lever K,

5 so as to open the valve J. This operation permits the waste productsof combustion to exhaust through said valve. The said valve is kept openwhile the piston-head moves to the limit of its inward stroke,thus dis-1o charging a further volume of the waste projects of combustion fromthe explosion-chame her. The said valve is. still kept open until thepiston-head moves outward to approximately the line 11, thus permittinga fresh charge of pure air to be drawn into the explosion-chamber.Simultaneously the pistonhead reaches the approximate line 11 the rollerT escapes the cam 9 and rests upon the. uniform periphery of the sleeveR, thus clos- 2o ing the valve J. As the piston-headcou- 0 scribes thecycle operating in the alternative form of explosion-chamber shown inFig-5. As will be understood, the pressure within the explosion-chamberduring the outward movement of the piston-head H when an ex- 3 5 plosionis not taking. place is much below that of the outside atmosphere, thuspermitting the fuel-measuring device to operate so as to measure andfeed the required amount of raw gasolene into said explosion-chamber.

40 A device for measuring and delivering a charge of raw gasolenedirectly into the explosion-chamber is an essential element ofv myinvention.

The preferred form of fuel-measurer is broadly described as follows: 13.is any suit ablecasing provided with two ducts l t and a centralpassage-way 15, in which central passage-way operates any suitable valve16.v V is a conduit leading from any suitable .reser- The reservoir ispreferably constructed so that the fuel therein may be under atmosphericpressure. Immediately the pressure within the explosionchamber is belowthat of the atmosphere the 5 5 gasolene isforced inthe directionindicated by arrow through the fuel-measurer into the ex-.plosion-chamber. Immediately the charge is being compressed intheexplosion-chamber thepressure therein presses againstthe gasoe o lene inthe conduit V, thus preventing same from passing into theexplosion-chamber during thls operation. This pressure on the gasolenemoves the valve 16 into theposition'shown 111 Fig. 7 5 thuspreventingthe gasolene inrthe,

measuring device and its connecting passage ways and conduits beingforced therefrom.

The operating parts of the engine will of course (be provided with oilin the usual manner.

I do not confine myself to means shown and described for operating thevalve J.

The essential elements of my invention are i an explosion-chamberprovided with a separate inlet for fuel, a single valve which performsthe function of. carrying off a portion of the waste products ofcombustion and a further function of introducing fresh air into theexplosion-chamber, the piston-head operatingin relation to said valve,means for measuring and delivering a charge of raw gasolene. into said.explos1onchamber, and means for operating said valve as described.

I donot confine myself to the construction of the parts herein shown anddescribed, as same may be altered in many ways without departing fromthe spirit of my invention.

The spur-gear M revolves twice as often as.

the spur-wheelN.

What I claim as my invention is 1. The combination with anexplosion-chamber, provided with an opening through which fuel only isfed, and a main exhaust port opened and closed by the piston-head; saidpis-z ton-head; means for feeding raw liquidfuel into saidexpl0sionchamber through said fuel- Y opening, and a valve controlling aport from said explosion-chamber to the atmosphere, of:

means whereby the valve is opened to permit the piston-head to removewaste products of combustion from explosion-chamber during one of itsinward movements, and kept open.

while the piston-head isv moved a certain distance outwardso as to admitfresh air into the explosion-chamber, then closed while the raw liquidfuelis fed. into the explosion-chamber, and then opened and kept openuntil the piston-head has moved to the limit of its outward stroke andopened the main exhaust-port, so

as to removethe residue ofthe waste products. of combustion, and thenclosed when the pis-- ton-head closes said exhaust-port on the returnstroke. r

2. The combination with an explosion-chamber, provided with an openingthrough which fuelonly. is fed,. and a main exhaustrport opened andclosed by the piston-head; said piston-head; means operated .hy thesuction.

strokeor portion thereof of said piston-head, forfeedingraw liquid fuelinto said explosionchamber through. said fuel opening, and a valvecontrolling a port from said explosion chamber to the atmosphere, ofmeansv whereby the valve. is opened to permit the pistonhead to removewaste products of combustion from explosion-chamberduring one of its.inward movements, and kept open while the piston-head is moveda certaindistance outward so as 1 to admit fresh air intothe explosionchamber,then closed while the raw liquid fuel is fed into the explosion-chamber;and then opened and kept open until the piston-head has moved to thelimit of its outward stroke and opened the main exhaust-port, so as toremove the residue of the waste products of combustion, and then closedwhen the piston-head closes said exhaust-port on the return stroke.

3. The combination with an explosion-chamber, provided with an openingthrough which fuel only is fed, and a main exhaust port opened andclosed by the piston-head; said piston-head; a valve controlling a portfrom said explosion chamber to the atmosphere, and means whereby saidvalve is opened to permit the piston-head to remove waste products ofcombustion from the explosion-chamber during one of its inwardmovements, and kept open while the piston-head is moved a certaindistance outward so as to admit fresh air into the explosion-chamber,then closed while the raw liquid fuel is fed into the explosion-chamber,and then opened and kept open until the piston-head has moved to thelimit of its outward stroke and opened the main exhaustport, so as toremove the residue of the waste products of combustion, and then closedwhen the piston-head closes said exhaust-port on the return stroke, ofmeans for measuring and delivering a charge of raw liquid fuel into saidexplosion-chamber through said fuel-opening.

4. The combination with an explosion-chamber, provided with an openingthrough which fuel only is fed, and a main exhaust-port, opened andclosed by the piston-head; said piston-head; a valve controlling a portfrom said explosion chamber to the atmosphere, and means whereby saidvalve is opened to permit the piston-head to remove waste products ofcombustion from the explosion-chamber during one of its inwardmovements, and kept open while the piston-head is moved a certaindistance outward so as to admit fresh air into the explosion-chamber,then closed while the raw liquid fuel is fed into the explosion-chamber,and then opened and kept open until the piston-head has moved to thelimit of its outward stroke and opened the main exhaust-port, so as toremove the residue of the waste products of combustion, and then closedwhen the piston-head closes said exhaust-port on the return stroke, ofmeans, operated by the. suction-stroke or portion thereof of saidpistonhead, for feeding raw liquid fuel into said explosion-chamberthrough said fuel-opening.

5. The combination with an explosion-chamber, provided with an openingthrough which fuel only is fed, and a main exhaust-port opened andclosed by the piston-head; said pistonhead; means for feeding raw liquidfuel into said explosion chamber through said fuelopening, and a valve,situated in the head of the explosion chamber, controlling a port fromsaid explosion-chamber to the atmosphere, of

means whereby the valve is opened to permit the piston-head to removewaste products of combustion from explosion-chamber during one of itsinward movements, and kept open whilethe piston-head is moved a certaindistance outward so as to admit fresh air into the explosion-chamber,then closed while the raw liquid fuel is fed into the explosion-chamber,and then opened and kept open until the piston-head has moved to thelimit of its outward stroke and opened the main exhaust-port, so as toremove the residue of the waste products of combustion, and then closedwhen the piston-head closes said exhaust-port on the return stroke.

6. The combination with an explosion-chamber, provided with an openingthrough which fuel only is fed, and a main exhaust-port opened andclosed by the piston-head; said piston head; means for feeding rawliquid fuel into said explosion chamber through said fuelopening, and avalve controlling a port from said explosion-chamber to the atmosphere,of a bearing; a revolving member operating on said bearing, and meansintermediate said revolving member and said valve, the said revolvingmember being constructedso as to operate said intermediate means so thatthe said opened and kept open until the piston-head fuel only is fed,and a main exhaust-port opened and closed by the piston-head; saidpistonhead; means for feeding raw liquid fuel into said explosionchamber through said fuelopening, and a valve controlling a port fromsaid explosion-chamber to the atmosphere, of

a bearing; a revolving member operating on said bearing; a rod restingagainst said revolving member, and means intermediate said rod and saidvalve, the said revolving member being constructed so as to operate saidrod and said intermediate means so that the said valve is opened topermit the piston-head to remove waste products of combustion from theexplosion-chamber during one of its inward movements, and kept openwhile the piston-head is moved a certain distance outward so as to admitfresh air into the explosioncharnber, then closed while the raw liquidfuel IIO head closes said exhaust-port on the return.

stroke.

In testimony whereof I have signed my name to this specification in thepresence of two sub- 10 scribing Witnesses.

ANSON GROVES RONAN.

Witnesses:

EGERTON R. CASE, W. H. SMITH.

